Effects of Process Parameters on the Bead Shape in the Tandem Gas Metal Arc Welding of Aluminum 5083-O Alloy

In gas metal arc welding (GMAW), the weld bead shape is an important factor that directly related to quality of welded joints. This study investigates effects process parameters, including speed (WS) and leading trailing wire feed rates (WFR), on shape, leg length penetration depth, in tandem GMAW aluminum 5083-O alloy. An asynchronous direct current–direct current pulse system a torch were designed applied improve productivity quality. Response surface methodology was used analyze parameters estimate regression models for predicting shape. As result observing behavior using high-speed camera, it confirmed WFR affects depth length. The coefficient determination (R2) 0.9414 0.9924 depth. It also validated estimated effective (leg depth) representative process.